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<?php final class Color { private const RED = 'red'; private const BLUE = 'blue'; public static function __callStatic($a, $b) { var_dump($a, $b); } } Color::RED;
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Cannot access private constant Color::RED in /in/N3eev:14 Stack trace: #0 {main} thrown in /in/N3eev on line 14
Process exited with code 255.

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